Denitrification

In a biological water treatment, denitrification is generally the next step following nitrification. Here nitrate (NO3) and nitrite (NO2) are transformed into nitrogen (N2). The gaseous nitrogen escapes out of the water into the air. Air exists for 78% out of nitrogen (N2) and for 21% out of O2 (oxygen), so N2 is absolutely not polluting the atmosphere.

A large number of aerobic bacteria is able to perform denitrification. When there is no oxygen in the water, these bacteria use nitrate en nitrite as a source of oxygen.

PCA can help you with these technologies, both in design and construction of the installation.